CN102942305A - Novel method for preparing mineral wool Vacuum Insulation Panel (VIP) core material - Google Patents
Novel method for preparing mineral wool Vacuum Insulation Panel (VIP) core material Download PDFInfo
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- CN102942305A CN102942305A CN2012104779881A CN201210477988A CN102942305A CN 102942305 A CN102942305 A CN 102942305A CN 2012104779881 A CN2012104779881 A CN 2012104779881A CN 201210477988 A CN201210477988 A CN 201210477988A CN 102942305 A CN102942305 A CN 102942305A
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- 239000011490 mineral wool Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title abstract description 11
- 238000009413 insulation Methods 0.000 title abstract description 5
- 239000011162 core material Substances 0.000 title abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000835 fiber Substances 0.000 claims abstract description 22
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 12
- 239000002002 slurry Substances 0.000 claims abstract description 12
- 230000018044 dehydration Effects 0.000 claims abstract description 9
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 9
- 238000003860 storage Methods 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims description 13
- 238000002360 preparation method Methods 0.000 claims description 12
- 229920000742 Cotton Polymers 0.000 claims description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 10
- 239000011707 mineral Substances 0.000 claims description 10
- 238000009740 moulding (composite fabrication) Methods 0.000 claims description 6
- 206010013786 Dry skin Diseases 0.000 claims description 3
- 238000009826 distribution Methods 0.000 abstract description 3
- 238000007865 diluting Methods 0.000 abstract 1
- 239000006185 dispersion Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 1
- 239000002893 slag Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 239000003365 glass fiber Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000009955 starching Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 206010016654 Fibrosis Diseases 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000004761 fibrosis Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229960001866 silicon dioxide Drugs 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
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- Thermal Insulation (AREA)
Abstract
The invention discloses a novel method for preparing a mineral wool Vacuum Insulation Panel (VIP) core material. The method comprises steps of step 1, adding rock wool to a fluffer, adding sulfuric acid and water for dispersion, dispersing the rock wool to be in a diameter of less than 1.5 mu m, feeding the dispersed rock wool to a storage stirring pool, adding the sulfuric acid and the water, and obtaining slurry of the potential of hydrogen (PH) value from 3.5 to 4.5 and of 3-4% of mass concentration; step 2, diluting the slurry obtained in the step 1 to be in 0.2-0.4% of mass concentration, removing slag, conveying the obtained slurry to an inclined net former for wet forming, obtaining wet paper, and conducting suction dehydration for the wet paper on the condition of 0.01-0.05 Mpa of vacuum degree; and step 3, drying the wet paper obtained in the step 2 at the temperature from 200 DEG C to 300 DEG C. The VIP core material prepared through the method is low in thermal coefficient and cost, uniform in fiber distribution and neat.
Description
Technical field
The present invention relates to a kind of vacuum heat-insulating plate and fill the making method of core, be specifically related to the preparation method of the cotton VIP core of a kind of New Mineral.
Background technology
Vacuum heat-insulating plate (Vacuum Insulation Panel; be called for short VIP) be a kind of in the vacuum thermal insulating material; to be composited by filling core and vacuum protection top layer; the heat transmission that it avoids convection of air to cause effectively; but so thermal conductivity decrease; and not containing any OD material, have environmental protection and energy-efficient characteristic, is present state-of-the-art thermal insulation material in the world.Compare with traditional insulation materials, the VIP core can be when satisfying identical heat preservation technology requirement, have that layer is thin, volume is little, lightweight advantage, be applicable to energy-conservation high, the fields such as the lagging material space is little, weight is wanted light refrigerator, refrigerator-freezer, refrigerator car, submarine, airship, satellite that require.
Prior art mainly adopts glass fibre cotton to produce the VIP core, but its production cost is too high, and its thermal conductivity still not exclusively satisfies space constraint and the high high-performance heat insulating demand of appearance requirement of being subjected to.
Summary of the invention
In view of this, the invention provides the preparation method of the cotton VIP core of a kind of New Mineral, can greatly reduce production costs, and optimize and reduce thermal conductivity.
The preparation method of the cotton VIP core of New Mineral of the present invention may further comprise the steps:
1) disperses slurrying: rock wool fibers is added fluffer, then add sulfuric acid and clear water disperses, rock wool fibers is dispersed to diameter less than 1.5 μ m; Then the rock wool fibers after will disperseing is sent into the storage agitated pool, adds sulfuric acid and clear water again and is adjusted to pH value 3.5 ~ 4.5, the slurry of mass concentration 3% ~ 4%;
2) moulding: it is 0.2% ~ 0.4% that the slurry that step 1) is obtained is diluted to mass concentration, and processing again removes the gred; Then slurry is delivered to and carries out wet moulding on the oblique net former, obtain l Water Paper; Under vacuum tightness is the condition of 0.01～0.05MPa, l Water Paper is aspirated dehydration again, make the water ratio of l Water Paper＜20%;
3) l Water Paper that drying: with step 2) obtains carries out drying treatment under 200 ~ 300 ℃, get product.
Further, described step 2) in during wet moulding, divide six sections dehydration formings, the first paragraph dehydrating amount is 8m3/min.m, the second segment dehydrating amount is 8m3/min.m, and the 3rd section dehydrating amount is 8m3/min.m, and the 4th section dehydrating amount is 7m3/min.m, the 5th section dehydrating amount is 7m3/min.m, and the 6th section dehydrating amount is 5m3/min.m.
Further, described step 2) when middle suction is dewatered, minute three sections vacuum take-ofves, first paragraph vacuum tightness is 0.01～0.02MPa, and second segment vacuum tightness is 0.02～0.03MPa, and the 3rd section vacuum tightness is 0.03～0.05MPa.
Further, in the described step 3) during drying treatment, divide five sections dryings, the first paragraph temperature is 280～300 ℃, the second segment temperature is 260～280 ℃, and the 3rd section temperature is 250～270 ℃, and the 4th section temperature is 230～250 ℃, the 5th section temperature is 200～220 ℃, is dried to the finished product water content and is lower than 0.03%.
Beneficial effect of the present invention is:
(1) the present invention adopts rock wool fibers to produce the VIP core, and rock wool fibers is dispersed to diameter less than 1.5 μ m, the VIP core specific surface area that makes thus is large, the thermal resistance area is large, so low, good effect of heat insulation of thermal conductivity, and high thermal resistance is better than other lagging material, and price is also more cheap;
(2) rock wool fibers is owing to himself be comprised of raw mineral materialss such as silicon-dioxide, ferric oxide, aluminium sesquioxide, calcium oxide, magnesium oxide, titanium oxide, the interior molecules link changes in through fusing, wire drawing, moulding process, but its physical property does not change, therefore after the use after air is placed for some time, material meeting weathering, can not cause environmental pollution, belong to environmentfriendly products;
(3) the present invention adopts wet therapy forming process, and fiber is fully decomposed, and adds dispersing auxiliary, then adopt lower concentration starching mode, so the product Fiber Distribution is even, product is smooth;
(4) the present invention's wet moulding on oblique net former, and adopt six sections dehydration formings, each section set independent dehydration forming flow, fully satisfied the lower concentration pulping requirements of rock wool fibers, also is that good evenness and cross direction ration are created the assurance of good process condition.
Description of drawings
In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing, wherein:
Fig. 1 is the synoptic diagram of moulding process among the present invention.
Embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.
Embodiment 1
The preparation method of the cotton VIP core of the New Mineral of present embodiment may further comprise the steps:
1) disperses slurrying: rock wool fibers is added fluffer, then add sulfuric acid and clear water disperses, rock wool fibers is dispersed to diameter less than 1.5 μ m; Then the rock wool fibers after will disperseing is sent into the storage agitated pool, adds sulfuric acid and clear water again and is adjusted to pH value 4.0, the slurry of mass concentration 3.5%;
2) moulding: it is 0.3% that the slurry that step 1) is obtained is diluted to mass concentration, and processing again removes the gred; Then slurry is delivered to and carries out wet moulding on the oblique net former, divide six sections dehydration formings, the first paragraph dehydrating amount is 8m3/min.m, the second segment dehydrating amount is 8m3/min.m, the 3rd section dehydrating amount is 8m3/min.m, and the 4th section dehydrating amount is 7m3/min.m, and the 5th section dehydrating amount is 7m3/min.m, the 6th section dehydrating amount is 5m3/min.m, obtains l Water Paper; Again l Water Paper is aspirated dehydration, minute three sections vacuum take-ofves, first paragraph vacuum tightness is 0.01MPa, and second segment vacuum tightness is 0.02MPa, and the 3rd section vacuum tightness is 0.05MPa, makes the water ratio of l Water Paper＜20%; Moulding process as shown in Figure 1;
3) l Water Paper that drying: with step 2) obtains carries out drying treatment, minute five sections dryings, and the first paragraph temperature is 300 ℃, the second segment temperature is 270 ℃, and the 3rd section temperature is 260 ℃, and the 4th section temperature is 240 ℃, the 5th section temperature is 200 ℃, is dried to the finished product water content and is lower than 0.03%.
Mineral wool VIP core and other lagging material of embodiment 1 preparation are compared detection, and the result is as shown in the table:
As seen from the above table, the thermal conductivity of the mineral wool VIP core of embodiment 1 preparation is all low than other lagging material, and high temperature resistant warm nature is all higher than other lagging material, and is also cheap than glass fibre cotton on the price, complete alternative glass fibre VIP core.
Rock wool claims again rock wool, the a kind of of mineral wool, as main raw material take natural rock such as basalt, gabbro, rhombspar, iron ore, bauxitic clay etc., through high temperature melting, fibrosis and the inorganic fibre of making, 20 century 70s are widely used in metallurgy, machinery, building materials, oil, chemical engineering industry; Its preparation method is: with raw materials such as natural rock, ores, fusing (temperature is below 2000 ℃) in cupola furnace or other tank furnace, with 50 atmospheric pressure blow by force, quenching becomes fibrous; Or with getting rid of a method, fused solution stream is come off on the multi-stage rotary rotor, borrow centrifugal force to get rid of into fiber, general 3 ~ 9 μ m of diameter, unit weight 50 ~ 200 kg/m
3, thermal conductivity 0.029～0.046 W/ (m.k) under the normal temperature is being 0.111～0.145 W/ (m.k) below 600 ℃, do not fire, not mould, do not eat into.The present invention adopts rock wool fibers to produce the VIP core, and rock wool fibers is dispersed to diameter less than 1.5 μ m, by the energy consumption of micro-pore chargeable heat molecule in the material internal layer between the fiber, reduce intermolecular heat transmission, the VIP core specific surface area that makes thus is large, the thermal resistance area is large, so low, the good effect of heat insulation of thermal conductivity, and high thermal resistance is better than other lagging material, and price is also more cheap.
In addition, the present invention adopts lower concentration starching mode (mass concentration is 0.2% ~ 0.4%), wet moulding on oblique net former, so the product Fiber Distribution is even, product is smooth.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although by invention has been described with reference to the preferred embodiments of the present invention, but those of ordinary skill in the art is to be understood that, can make various changes to it in the form and details, and not depart from the spirit and scope of the present invention that appended claims limits.
Claims (4)
1. the preparation method of the cotton VIP core of a New Mineral is characterized in that: may further comprise the steps:
1) disperses slurrying: rock wool fibers is added fluffer, then add sulfuric acid and clear water disperses, rock wool fibers is dispersed to diameter less than 1.5 μ m; Then the rock wool fibers after will disperseing is sent into the storage agitated pool, adds sulfuric acid and clear water again and is adjusted to pH value 3.5 ~ 4.5, the slurry of mass concentration 3% ~ 4%;
2) moulding: it is 0.2% ~ 0.4% that the slurry that step 1) is obtained is diluted to mass concentration, and processing again removes the gred; Then slurry is delivered to and carries out wet moulding on the oblique net former, obtain l Water Paper; Under vacuum tightness is the condition of 0.01～0.05MPa, l Water Paper is aspirated dehydration again, make the water ratio of l Water Paper＜20%;
3) l Water Paper that drying: with step 2) obtains carries out drying treatment under 200 ~ 300 ℃, get product.
2. the preparation method of the cotton VIP core of New Mineral according to claim 1, it is characterized in that: described step 2) during wet moulding, divide six sections dehydration formings, the first paragraph dehydrating amount is 8m3/min.m, the second segment dehydrating amount is 8m3/min.m, and the 3rd section dehydrating amount is 8m3/min.m, and the 4th section dehydrating amount is 7m3/min.m, the 5th section dehydrating amount is 7m3/min.m, and the 6th section dehydrating amount is 5m3/min.m.
3. the preparation method of the cotton VIP core of New Mineral according to claim 1, it is characterized in that: when suction is dewatered described step 2), divide three sections vacuum take-ofves, first paragraph vacuum tightness is 0.01～0.02MPa, second segment vacuum tightness is 0.02～0.03MPa, and the 3rd section vacuum tightness is 0.03～0.05MPa.
4. the preparation method of the cotton VIP core of New Mineral according to claim 1, it is characterized in that: in the described step 3) during drying treatment, divide five sections dryings, the first paragraph temperature is 280～300 ℃, the second segment temperature is 260～280 ℃, and the 3rd section temperature is 250～270 ℃, and the 4th section temperature is 230～250 ℃, the 5th section temperature is 200～220 ℃, is dried to the finished product water content and is lower than 0.03%.
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| CN201210477988.1A CN102942305B (en) | 2012-11-22 | 2012-11-22 | The preparation method of mineral wool core material of vacuum heat insulation plate |
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| CN201210477988.1A CN102942305B (en) | 2012-11-22 | 2012-11-22 | The preparation method of mineral wool core material of vacuum heat insulation plate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277631A (en) * | 2013-05-31 | 2013-09-04 | 重庆再升科技股份有限公司 | Glass-fiber vacuum insulation panel nano core material and preparation method thereof |
| CN106594458A (en) * | 2016-11-24 | 2017-04-26 | 苏州维艾普新材料股份有限公司 | Device for producing core material of vacuum insulated panel with double layers of wet forming machines |
| CN106759992A (en) * | 2016-12-21 | 2017-05-31 | 安徽百特新材料科技有限公司 | A kind of VIP core plates for heat insulating board |
| CN106836532A (en) * | 2016-12-21 | 2017-06-13 | 安徽百特新材料科技有限公司 | A kind of processing method of STP outer wall vacuums warming plate |
| CN116288922A (en) * | 2021-12-21 | 2023-06-23 | 四川信邦泰环保科技有限公司 | Basalt fiber composite felt substrate for zeolite rotating wheel and combining process |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277631A (en) * | 2013-05-31 | 2013-09-04 | 重庆再升科技股份有限公司 | Glass-fiber vacuum insulation panel nano core material and preparation method thereof |
| CN103277631B (en) * | 2013-05-31 | 2015-11-11 | 重庆再升科技股份有限公司 | A kind of glass-fiber vacuum insulation panel nano core material and preparation method thereof |
| CN106594458A (en) * | 2016-11-24 | 2017-04-26 | 苏州维艾普新材料股份有限公司 | Device for producing core material of vacuum insulated panel with double layers of wet forming machines |
| CN106759992A (en) * | 2016-12-21 | 2017-05-31 | 安徽百特新材料科技有限公司 | A kind of VIP core plates for heat insulating board |
| CN106836532A (en) * | 2016-12-21 | 2017-06-13 | 安徽百特新材料科技有限公司 | A kind of processing method of STP outer wall vacuums warming plate |
| CN106836532B (en) * | 2016-12-21 | 2019-10-22 | 安徽百特新材料科技有限公司 | A kind of processing method of STP outer wall vacuum insulation board |
| CN116288922A (en) * | 2021-12-21 | 2023-06-23 | 四川信邦泰环保科技有限公司 | Basalt fiber composite felt substrate for zeolite rotating wheel and combining process |
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